Home / 129,828.07-179,164.07-76,114.54

Finding the Fourth Proportional to 129,828.07, 179,164.07 and 76,114.54

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Solution

The fourth proportional to 129,828.07, 179,164.07 and 76,114.54 is: 105,038.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,828.07 : 179,164.07 = 76,114.54 : x
  2. Step 2: Convert to fraction form
    129,828.07/179,164.07 = 76,114.54/x
  3. Step 3: Cross multiply
    129,828.07x = 179,164.07 × 76,114.54
  4. Step 4: Simplify right side
    129,828.07x = 13,636,990,772.58
  5. Step 5: Solve for x
    x = 13,636,990,772.58/129,828.07
  6. Step 6: Final answer
    x = 105,038.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.